Outrigger scaffold



Nov. 26, 1929. J. AMREIN OUTRIGGER SCAFFOLD Filed Sept. 2, 1927 2 Sheets-Sheet hm AH AN Nov. 26, 1929. J. AMREIN 1,736,817

OUTRIGGER SCAFFOLD Filed Sept. 2, 1927 2 Sheets-Sheet 2 anvmtoz Josepk Amrez'n a3 Ma auom 4 I Patented Nov. 26, 1929 UNITED STATES PATENT ()FFICE OUTBIGGER SCAFFOLD Application filed September 2, 1927.

The invention relates to a scaffold suitable for use in building construction, and more especially of the so-called outrigger type of'scaffold which is adapted to carry a platform or the like exteriorly of the wall of a building, the said platform being supported from the interior of the same.

The invention has for its object an outrigger scaffold of simple and safe construction,

which may be readily set up or applied to the building structure without requiring any particular skill; and, furthermore, a scaffold which will be effectually held in position to insure safety. A further object of the invention resides in an outrigger scaffold which may be constructed of standard parts and which admitsof being compactly stored when in dismantled condition.

In carrying out the invention, there is provided a suitable standard or frame designed to be secured to a floor beam within the structure and suitably braced thereto so that the said standard is maintained in the set position, while supporting an outrigger plank 2 whose outer end projects through the window, or other opening, and is designed to carry the platform of the scaffold. Provision is made, furthermore, for fixing the inner end of said plank relatively to a floor beam; and a suitable safety guard rail may be attached to the outer end of said plank to protect those working on the scaffold.

The nature of the invention, however, will best be understood when described in connection with the accompanying drawings, in

which:

Fig. 1 is a vertical section through a window of a building and illustrates the novel scaflolding applied to the building structure.

49 Fig. 21s a vertical section therethrough,

' with parts omitted, taken on the line 22, Fig. 1, and looking in the direction of the arrows.

Fig. 3 is an end view of the outrigger plank 4 supporting element of the scaffolding and illustrates the manner of securing same to a floor beam.

Fig. 4 is a fragmentary end view of the safety guard rail structure as attached to the outer end of the outrigger plank.

serial No. 217,145.

Fig. 5 is a fragmentary plan view of a building wall under construction and shows the scaflolding and protecting safety rail erected in position.

Referring to the drawings, 10 designates the wall of a building provided, for example, with a window opening 11 and having set therein the floor beams 12. A temporary flooring consisting of the planks 13 is supported by the beams 12 and is designed in turn to support within the structure a standard or frame 14 of the novel scaffolding. This standard is A-shaped, consisting of an angle iron or like member bent substantially to a V, having feet 15 adapted to rest on the flooring 13, and of a cross-brace or bar 16 which may be riveted or welded to the legs of the V to assure rigidity and strength. A plurality of these A frames are designed to be mounted on the flooring 13, one only being shown, however; and the same are intended for location in front of the various windows or openings of the wall.

Preferably, each standard carries an upright member or bar 17 which is arranged to be adjustably clamped to the apex of said standard, as by a hooked clamp member comprising the threaded bolt 18 and clamping handle 19 working over the end of said bolt. In this manner, the said upright may be rigidly clamped at various heights to the standard; and at its lower portion it is designed to be clamped also to the floor beam 12 as by a hooked clamp 20 and clamping handle 21 working over the outer threaded end of same. The position of the standard is thereby fixed relatively to the beam 12, and the same is further insured and the standard braced by means of an angularly disposed brace member 22 pivoted to the upright 17 and adapted to be secured or clamped to the upper edge of beam 12 by a hooked clamping member 23 and the clamping handle 24 rotatable over its threaded outer end.

The upper portion of upright 17, moreover, is perforated to receive a hooked clamp 25 adapted to retain through said clamp and clamping handle 26 thereof an outrigger plank 27 which is to project through an opening or above a wall, extending a suhicient distance beyond the said well 10, for example, to provide ample Working space and supporting for this purpose the scaliolding flooring 28. The inner end of said outrigger plank, furthermore, is secured positively by a second upright member 30 having a lower channel portion 31 to fit about or receive a floor beam 12, being locked positively thereto through the hooked clamp 32 and clamping handle 33. At its upper portion it is to be secured to the said inner end of the outrigger plank; and a pair of hooked clamps 3 1, having clamping handles 35 Working o ier the outer ends of the said clamps, may be utilized for this purpose. Upright 30, furthermore, is perforated at various points along the upper and lower porions of its length, as at 36 and 37, to allow for supporting the outrigger plank at different heights and for receiving different depths of floor beams. It Will be understood, also, that while the various members have been shown and described herein as secured to the floor beams of the working floor, i s entirely feasible to secure them to the beams of a floor above should this be desirable in certain constructions, or to other supporting beams.

As it is desirable, moreover, to provide some means of protection along the outer portion of the scaffolding flooring 28, rail supporting members are designed to be located at the outer ends of the ditl'erent outrigger planks 27. Such members, for example, may comprise a pair of arms 40 and 41 pivoted to each other attheir upper ends, arm 40 being adapted to be secured to the plank 27 by the hooked clamp 12 and clamping handle 43, While the brace arm 41 is secured thereto by a clamp 44 and clamping arm 45. Atthe upper portion of arm 40 a hooked clamp 16 is passed through the corresponding perforation therein and is designed to retain to said arm a safety guard rail 47, the clamp being tightened by "h clamping handle 4:8 to securely retain sair.

' to the upright.

The scaffolding is thus adequately sale guarded and it Will be observed that the parts are all of simple construction and readily applied. Moreover, it may be quickly instal ed or dismantled, and when dismantled folds into compact form afiording convenient pack ing thereof as for transportation or storage.

I claim:

1. A scaffolding, comprising a standard adapted to be supported on the floor beams of a structure, an adjustable upright carried by the standard and adapted to support an outrigger plank, means to secure the upri ht to a floor beam, means to further secure the standard to a floor beam, and means to secure the inner end of the outrigger plank to a floor beam.

2. A scaffolding for use in the construction of wall-bearing structures having exposed 1 floor beams, said scaffolding comprising a supporting standard secured to a beam on the inner side of a wall of the structure, an outrigger plank adapted to project through an opening of the Wall and adjustably supported by the standard, means to secure the plank to the said standard, and adjustable means to secure said outrigger plank at its inner end to a floor beam.

3. A scaffolding for use in the construction of wall-bearing structures having exposed floor beams, said scaffolding comprising a supporting standard, means to secure the standard to a floor beam on the inner side of a wall of the structure, an outrigger plank adapted to project through an opening of the wall adjustably supported by the said standard securing means, means to secure the plank to the said standard, and adjustable means to secure said outrigger plank at its inner end to the floor beam to which the said standard is secured.

4. A scaffolding for use in the construction of wall-bearing structures having exposed floor beams, said scaffolding comprising a supporting standard, means to secure the standard to a floor beam on the inner side of a wall of the structure, an outrigger plank adapted to project through an opening of the wall adjustably supported by the said standa rd securing means, means to secure the plank to the said standard, adjustable means to secure said outrigger plank at its inner end to the floor beam to Which the said standard is secured, and means to further secure the standard to the said floor beam.

5. A scatfolding for use in the construction of wall-bearing structures having exposed floor beams, said scaffolding comprising a supporting standard, an upright adjustably secured to the standard at its upper end, means to adjustably secure the lower end of said upright to a floor beam on the inner side of a Wall of a structure, an outrigger plank adapted to project through an opening of the Wall, means to secure the same to the upper end of said upright, and adjustable means to secure said outrigger plank at its inner end to the floor beam to Which the said standard is secured.

6. A scaffolding for use in the construction of wall-bearing structures having exposed floor beams, said scaflolding comprising a supporting standard, an upright adjustably secured to the standard at its upper end, means to adjustably secure the lower end of said upright to a floor beam on the inner side of a Wall of a structure, an outrigger plank adapted to project through an opening'ofthe wall, means to secure the same to the upper end of said upright, adjustable means to secure said outrigger plank at its inner end to the floor beam to which the said standard to the upper end of said upright, and means to secure said brace at its opposite end to said beam.

7. A scaffolding for use in the construction of wall-bearing structures having exposed fioor beams, said scafi'olding comprising a supporting standard, an upright adjustably secured to the standard at its upper end, means to adjustably secure the lower end of said upright to a floor beam on the inner side of a wall of a structure, an outrigger plank adapted to project through an opening of the wall, a second upright member, means to adjustably secure the same at its upper end to the inner end of said outrigger plank, and means to secure the lower end of said second upright to the said beam.

8. A scaffolding for use in the construction of Wall-bearing structures having exposed fioor beams, said scaffolding comprising a supporting standard, an upright adj ustably secured to the standard at its upper end, means to adjustably secure the lower end of said upright to a floor beam on the inner side of a wall of a structure, an outrigger plank adapted to project through on opening of the wall, a second upright member having a lower channel portion to fit about said floor beam, clamping means to secure said second upright member to the beam, and clamping means at the upper portion of said second upright portion to secure the inner end of the outrigger plank thereto.

9. A scaffolding for use in the construction of wall-bearing structures having exposed floor beams, said scaifolding comprising a supporting standard, an upright adjustably secured to the standard at its upper end. means to adjustably secure the lower end of said upright to a floor beam on the inner side of a Wall of a structure, an outrigger plank adapted to project through an opening of the wall, a second upright member having a lower end adapted to accommodate different widths of beams, means to secure said lower end to the said beam, and means to secure the upper portion of said second upright member to the inner end of the outrigger plank.

In testimony whereof I affix my signature.

JOSEPH AMREIN. 

